Chiefs 2002 certainly was huge...
But... for sheer volume of material
http://www.chiefdelphi.com/forums/pi...gle&picid=3956
Those wings are solid expansion foam.
I don't usually mention my own bots in threads like these, but we were very proud of how huge/strong/light those wings came out.
As far as I know, no one else has ever done anything like that.